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| On 09/03/2013, at 7:21 AM, Chris Meyer <chris@crishdesign.com> wrote: > Quick poll: What's your favorite spill suppression utility or trick? Most of the time I simply use the AE spill suppressor. I used to have the Key Correct plugins and I don't think I ever found a case where its spill suppressor - which is more fiddly to use than the standard AE one - did a better job. I don't know if it's technically 'spill', but motion blur is the tricky thing to deal with when keying. If the key isn't set up well then you can end up with footage that looks like it has a spill problem in moving areas - actually the screen is showing through semi-transparent regions. This is where you need to adjust the 'screen balance' in Keylight, and if I can't get a good result then I'll use the Keylight edge colour correction, and reduce the saturation. Otherwise I don't normally use the Keylight colour correction options. The other technique I use if spill is bad is to create an edge matte and use it as an adjustment layer with the levels filter combined. The edge matte is created in a precomp by having the keyed layer alpha matte a blurred version of itself (ie. drag the keyed layer into a new comp, duplicate it, blur the top layer, set it as an inverted alpha track matte). When applied as an adjustment layer you can use the levels filter (or your favourite colour correction plugin) to compensate for the spill. -Chris |
